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Comparing two compressors

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发表于 2021-8-31 22:37:18 | 显示全部楼层 |阅读模式
I'm looking at air compressors now.  I need it to run an angle die grinder for me (in lieu of an angle grinder) and of course air up the random things that need airing up.At Sears I'm comparing two particular compressors, one a regular Craftsman 33gal, the other a Craftsman Pro model 25gal.  Both models will meet the cfm reqs for the die grinder and 25gal I've determined as the minimum size I can get away with.  I realize I'm going to have to compromise on a duty cycle compared to a huge shop compressor since I cannot drop a grand.  The reason I'm struggling on a decision is because they have a 25gal Pro model marked down on clearance since it's a floor model.  It's regularly over $400 but its marked down to $305.  The 33gal is sitting at $329.  Talking to the sales guys (who I did talk to for a long time- he's an offroad garage guy as well - jeeps and snow machines originally from AK.  Not an idiot poser but actually a knowledgeable guy) recommended the 33gal for the capacity so it isn't cycling when using the die grinder.  I'm leaning to the 25gal because it's a Pro model for less money and a slightly better cfm and not as loud being oil lubed.  Of course the sales guy is well, a sales guy so I don't fault him if he is up selling.  But I do think he's offering an honest recommendation.  What do you guys think?  Which compressor would you pick?  I need this to run in my garage and not a welding shop.Here's the two on paper:33 Gallon Craftsman $329    * Item weight: 145 lbs    * General warranty: 1 year limited    * SCFM delivery at 40 PSI: 6.3 SCFM    * SCFM delivery at 90 PSI: 5.1 SCFM    * Compressor tank capacity: 33 gallon    * Maximum compressor psi: 150 psi    * Compressor tank pump style: oil free    * Compressor tank type: horizontal    * Horsepower: 1.6 rhp    * Drive type: direct drive    *    * Voltage: 120 volts    * Overall color: red    * oCord option: fully equipped with power cord    * Setup: handle assembly required    * Manufacturer warranty: Craftsman Warranty25 Gallon Craftsman Pro $305 (on clearance as floor model)    * Item weight: 165 lbs    * General warranty: 1 year limited    * SCFM delivery at 40 PSI: 7.2 SCFM    * SCFM delivery at 90 PSI: 5.8 SCFM    * Compressor tank capacity: 25 gallon    * Maximum compressor psi: 150 psi    * Compressor tank pump style: oil lube    * Compressor tank type: horizontal    * Horsepower: 1.9 rhp    * Drive type: belt drive    * Voltage: 120/240 volts wired at 120    * Overall color: black    * Cord option: fully equipped with power cord    * Setup: handle assembly required    * Manufacturer warranty: Craftsman WarrantyLast edited by Monica; 09-21-2010 at 09:45 AM.Lincoln AC225 and CartLincoln WeldPak HD and CartOne hand
Reply:Monica,It's been pretty tough to see and reply to posts, with the Forum problems recently.  So we'll just try a reply here and see if it gets through and if you can actually see it.  Neither of those compressors will really and realistically run an air die grinder.  Sorry.  Not unless you are talking one of those 'micro' air tools, like a mini dentist's drill.A 'regular' 1/4 inch shaft air die grinder actually sucks down air at a rate of about 20-25 cfm at 90 psi when it is in use.  http://www.ingersollrandproducts.com....aspx?am_en=26At 'idle' or using the duty-cycle shenanigans that some air tools seem to be 'rated' by [example: an air impact wrench is usually not a continuous usage tool, so they 'rate' it by time averaging the usage sort of like this:  A 1/2 inch impact wrench in-use draws 20+ cfm of air at 90 psi, but since it only takes a few seconds (hopefully, Hah!) to loosen the fastener they 'rate' it by saying 20 cfm for 15 seconds only averages out to about 5 cfm over the full minute], the die grinder may be 'rated' for 3-5 cfm of air.  Better air tools usually use less air compared to 'cheaper' air tools.If you want to be able to use the air tool for continuous use or for long periods of use, you need a compressed air delivery "system" (compressor, piping, dryers, filters, hoses, etc) able to meet that air demand.I've -tried- to use an air die grinder with an air compressor 'rated' at 5.4/5.5 cfm @ 90 psi.  The compressor can't even come -close- to keeping up.  The tool sucks the tank down waaay faster than the motor and pump can refill.  Which means I could use the grinder for maybe 30 seconds or so (maybe a minute, it's been a while) and then I was effectively out of air.  So I had to wait for the tank to refill fully, and then I could run the die grinder for another 30-60 seconds or so.  Very, very frustrating.So for a 'little' air die grinder with a 'rated' 1/3 HP motor (see the spec sheet on the above IR right-angle air die grinder), you need about a  -minimum- 7 HP 80 gallon air compressor if you don't want to be waiting for air to be able to run the grinder.  And even that is a little short on the air delivery, because usually you want to spec the compressor to be able to not have to run continuously so that it and the compressed air can cool off a bit.Air is handy and useful and all, but if you want to be able to -use- the air tools on a production or semi-production basis then you need some serious air delivery capability.I just went through this sort of thing this weekend using a 1/2 inch air impact wrench trying to get some pretty stubborn bolts/nuts loose.  I was constanly waiting for air to refill so I could then 'hammer' for a minute or so and then the air pressure in the tank was down so low that the wrench was not doing anything.  For 'routine' impact use, I don't have a problem with air delivery and that impact.  Because I can usually just zip the bolts/nuts loose and then the compressor can 'catch-up' while I go to the next fastener.  These fasteners were -stubborn- and did n-o-t want to let go, so the impact wrench was doing a lot of hammering.For airing up some tires, or zipping off tight but not frozen lug nuts or such with an air impact wrench, either of those compressors would probably be OK.  For continuous usage of almost any air tool (die grinder, impact wrench, spray gun, etc) then those compressors will NOT do the job.Almost no one 'regrets' having an air compressor system that is big and capable of delivering gobs of air.  A too-small air compressor is frustrating or annoying or down-right unable to let you work with the air tools you want to use.Last edited by MoonRise; 09-21-2010 at 10:46 AM.  The best laid schemes ... Gang oft agley ...
Reply:Oh, and next you can get into the oil-free versus oil-lubed air compressors.Oil-free are usually louder, and have a waaaaay shorter life span.  They don't have too much problem with cold(er) temperatures and can be run on tilted/sloped surfaces (like up on a roof to run a roofing nailer.  They don't send oil into the air stream, because there is no oil.  There is no oil maintenance, because there is no lube oil to fill or check or change.Oil-lubed compressors are usually quieter (for comparable air delivery) and usually have a longer design life.  Like 10-20 times longer on the pump.  They do or may put some oil into the air stream, and so you have to be a bit more careful if you are using the air for painting or an otherwise 'clean' usage.  You'd just make sure you had the correct and proper air filters in place and it is generally no problem.Choices and trade-offfs.    The best laid schemes ... Gang oft agley ...
Reply:Doing anything in my life revolves around doing it inefficiently.  Story of my after-two-arm life.Considering I'm not in a production shop and I need to clean up my newb welder screw ups, would this be quicker than using a metal file or a Dremel with a grinding stone?Because if it does the job better and faster than that, it'll be fine.  As it is I can't do anything right now in regards to grinding.In a perfect world I'd have two hands, a beautifully huge shop plumbed for air and fluids and supplied with only the best tool and machines I could fit in there.  This world ain't perfect and I have to compromise.  So the bigger tank of 33gal would be better than the 25gal?Last edited by Monica; 09-21-2010 at 11:21 AM.Lincoln AC225 and CartLincoln WeldPak HD and CartOne hand
Reply:I agree that neither one of those compressors have anywhere near high enough air flow to run a continuous demand tool, such as a grinder, sander, scaler, plasma cutter or air arc.   15 cfm @ 90 psi is about the minimum I would buy for those type of tools.   Of the two compressors listed, the 25 gal one has a slightly bigger pump (higher cfm), so that is the one I would go for between the two.A small electric 4" angle grinder can be operated one-handed, I operate them that way sometimes.  The ones with an on-off switch, rather than a dead-man paddle switch, are easier to operate one-handed.  The short-body grinders that you grip around the motor housing are much easier to operate one-handed than the ones with extra handle length and trigger at the tail of the machine.  Use your body to help steady your arm.  This will be much more efficient than using a small air die grinder to grind your welds.  A sandpaper flap wheel on an angle grinder does a very nice job of cleaning up welds and leaves a nice finish.  Use an abrasive grinding disc to take down the big boogers then finish with a sandpaper flap wheel.  You may want to buy 2 grinders and keep a sandpaper wheel on one and a grinding disc on the other so you dont have to keep changing wheels back and forth.  I have several grinders, each with a different kind of wheel, to speed up swapping from one grinding or cutting operation to another.  I keep one with a wire brush disc or cup, another with a skinny zip cutoff disc, another with an abrasive grinding disc and another with a sandpaper flap disc and another set aside just for aluminum with a sand paper flap disc so it doesn't get contaminated with carbon steel, paint, rust, grease, etc.Last edited by DesertRider33; 09-21-2010 at 11:51 AM.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:A few random thoughts.For heavy work, take oiled over oil-free.  Your ears will love you for it, and it's likely to last considerably longer.  For running die grinders, bead blasters, that sort of thing, you're going to need a unit that can take a beating, especially if it's small.Tank size makes no real difference.  They're sized roughly in proportion to the output of the pump, but if you're doing heavy work, it won't make any difference how big it is unless it's really tiny or really huge.  The pump system still has to compress all the air you use.  If you think you need a larger tank, find a used portable tank, or a broken compressor, and plumb it's tank in (a tee is all you need) to increase the storage capacity.  All that buys you is longer tool running time until the pressure is too low to be useful, and it increases the time to bring it back up - you gain nothing as far as cubic feet per hour, but you smooth out the whole process when it comes to relatively short bursts of air useage with long times to recharge - like flushing a tank toilet, or that amusement park ride where they use air to shoot a ring of riders up a pole.  You might want to think about calling a few compressor repair shops, and tell them what you need.  They may have a small industrial unit that was repaired and never picked up, or taken in trade, that they want to get rid of.  Or know somebody selling one.  Auctions are another source for larger units.  Gotta watch the 3-phase, though.  There are things you can do, but it doesn't sound like you want to get that deep into it.
Reply:I always thought this unit looks like a pretty decent deal.  It's not industrial strength, as reflected in the price, but at 3+ actual hp, 10+ cfm at 90 psig, oiled belt-driven, it's almost the same as the short 'garage' types on wheels, but with far more air output.  $440.Home Depot 60 gallon vertical, belt-driven, oiled, 240V compressorSomething like that would come much closer to what you need, IMO.$100 or so more, but roughly double the air output, and storage capacity.Last edited by tkanzler; 09-21-2010 at 12:00 PM.
Reply:In a garage/shop, you don't -need- 'portable.  So go past the 120V 'small' portable compressors and get the biggest 240V compressor you can buy/fit.  That usually will be either a 60 gallon or an 80 gallon tank and a 3 or 5 or 7 HP electric motor  Oil-lube compressor.  Pick whether you want a single-stage or a two-stage compressor.  IMO, if you are running air tools that usually run at 90 psi (as opposed to running a paint spray gun at 40 psi), then a 120 psi compressor is -not- the way to go.  Pretty much as soon as you start using the tool the tank pressure drops and you are running just on what the pump can deliver.  You no longer have that 'shot' of tank air to let you run the tool for a while before the compressor/pump has to kick in.Which is one way intermittent-use air tools let you work.  You have all that energy stored in the compressed air inside the tank, and then you dump it out fast via the air tool (like an intermittent use air impact wrench).  So your 1 to 1.5 HP electric motor driving the air compressor pump fills the tank with pressurized air and then the impact wrench sucks it out at a roughly equivalent rate of 4 HP. Until the tank runs out of air at the pressure the tool needs and then you have to wait for the pump to catch up and refill the tank.  I can hold a 1/2 - 1 HP electric motor tool (angle grinder, router, etc) but I don't think I could hand-hold a 4 HP electric motor tool.   The 1/2 inch air impact wrench at full load (20-25 cfm) is about 4 equivalent HP, I hold and use that OK.IMHO, an air die grinder and a 120V 5 cfm compressor is going to frustrate you.Another option may be to use a flex shaft handpiece and a power head (electric motor).  This way you only have to hold the flex shaft and not the complete weight/size of the electric motor as well.  Sort of like a Dremel but with some power behind it.  IIRC, Foredom is one name.  They make handpieces that go to a 1/4 inch shank.http://www.foredom.net/generalpurpose.aspxI have a RotoZip (kind of like a big Dremel, but it runs at close to 1/2 HP as opposed to like 1/10 HP for a Dremel  ) and the flex shaft attachment.  IIRC, the collets/chucks are limited to 1/8 inch diameter shaft bits with the flex shaft but the RotoZip itself goes to 5/32.  The main 'purpose' of the RotoZip is as a spiral cutter/saw but you can get small(er) burrs and grinding stones with 1/8 inch shanks.http://www.rotozip.com/Shop/Category...m?IID=18?HID=6Last edited by MoonRise; 09-21-2010 at 12:09 PM.  The best laid schemes ... Gang oft agley ...
Reply:Can you guys quantify (if that's possible) the the "continuous use" phrase so I can have an idea for comparison.  Does "continuous use" mean essentially the tools will run for as long as I want to hold the trigger down?Re: electric angle grinderI actually grabbed the Ridgid 4 1/2" Slim Grip angle grinder from Home Depot a week or two ago with the intention of modding it per my drawing idea in the "paging the one armed man" thread.  Brought it home, unpacked it read the manual and put the disc on.  I plugged it in and gave the trigger a whirl.  The torque twist was enough to catch my attention.  Over the few days I've looked online for arm cuffs and the like to go about modding it.  It reminded me of thinking and building through my motorcycle controls (read:  mudding up my brain with things to figure out).  I googled "one hand angle grinder" and got a few impressive injury pics.  Coupled with the mood I was getting on the mod being more trouble than I cared to work on just to get a tool to work on other projects I said "No way.  That settled it.  I took the grinder back yesterday for a refund.  Over the last few days I've been in the yard cutting up some smaller diameter firewood limbs.  I've been using my Ridgid Fuego one handed recip. saw with some badazz Milwalkee 9" 5TPI pruning blades.  The amount of fatigue that my grip develops from two hours of work, controlling the tool is incredible.  With this feeling of fatigue in mind (and a sore forearm and wrist), looking at those gross pics of people maimed is enough to say there is my limit.  I guess I'm a wuss but I can't afford to chop something else off my body.  If I'm forced to use a smaller tool I can handle, with a pretty low work cycle for getting work done, then that's what I have to do.  I know these two are at the bottom of the compressor scale for what I'm looking to do with the angle die grinder.  But these are what I'm looking at.  I've been needing a garage compressor anyway for needs in the garage and the 25gal always got the job done in dad's garage (I know, I did the jobs with him).  I do recall him buying a die grinder and a carbide bit.  I did use that on projects and I do recall the tool running out of air and hearing the whine of it running out of air.  It was frustrating.  What I find worse though is sitting on my butt with my hands completely tied and not doing anything.  I guess I'm facing the "I got things to do" timer in my head.  I'd rather be plugging away at them than doing nothing.  Edit:tkanzler, thanks for the thoughts.  I think you posted when I was typing so I didn't see it before I posted this last reply.  I've seen that Husky unit at HD.  I don't have 220 in my garage though which would give me another issue to take care of before it could be used.Last edited by Monica; 09-21-2010 at 12:37 PM.Lincoln AC225 and CartLincoln WeldPak HD and CartOne hand
Reply:Hi Monica,one more for ..... those Compressors ain't gonna cut it for the Die Grinders and as you mentioned, it will be frustrating.Wuz up with the 240v?I thought you had it in the shop.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:No 240V.  I'm running an extension cord to the 30A dryer outlet.  When I got the stick I had to clean it up before I could use it.  In the cleanup I found the original power cord had been chewed into by a rat.  Instead of getting a new  power cord and extension cord w/adapter, I wired in a long extension cord directly to the welder.Lincoln AC225 and CartLincoln WeldPak HD and CartOne hand
Reply:Probably mentioned it before but what is the hold up in getting the shop area wired up?I know $ is always a concern but in the long run it would be cost effective to pay some $ now.perhaps put an ad in the Barter section of CL and trade some of your work for a sparky's work.I only had 120v available for a long time and used the small compressor and a die grinder- for about 30 secs, as Moonrise mentioned, and it sits in a drawer now. I don't have a need for a bigger compressor right now so the little guy is just for Airing up tires and such.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Given the confines of your question, then, I'd take the 25 gallon oil-lubed unit over the other one.  The only thing the oil-free unit has going for it is a larger reservoir, but you can augment the smaller tank with extra tanks if you want.  There's no limit on how many tanks you use, as long as they're rated for the maximum pressure of the compressor, and there is some facility for draining water.  If you have access to another compressor, you can always work both together.  As long as one doesn't overpressurize the other, there's no reason you can't use both together.  If you have the electric power, that is.Which brings up another point - 1.9 running hp is going to tax a 20A 120V circuit.  Not that it won't work, but it's getting way up there.  That's about all you're going to squeeze out of your branch circuit in your garage.  If you want more air, you'll need either another compressor on another circuit, or 240V so you can use a larger compressor.There's just no way around the physics.
Reply:Broccoli, the hold up is that my husband prefers the all or nothing approach to doing anything.  He'd rather get an electrical guy here to install the 220 in the garage that way he can get the guy to take care of other random electric issues around the house.  But by that time the cost goes up and he isn't ready to pay that big bill.  So nothing is done.  Same as the ripping out the carpet to replace with wood flooring.  He rather wait until we have enough money to upgrade the kitchen, rip out walls to the living room and get rid of the popcorn ceiling.  Meanwhile, we have crappyass carpet!  So, that is my personal battle.  Gotta replace money with work but I'm the only one doing the work.  I had to regrout and recalk the bathrooms when we bought the house and moved in or we'd wouldn't be showering this past year and a half  Anyway, so I guess yeah, the $$ or I gotta shoulder the load without letting on how much is spent   Bartering services would work if I found the right guy....don't get me wrong yall, I love my husband but I gotta take the good with the crappy.  The same as he does with me .There's just no way around the physics.
Reply:I know this belongs on the other post, but.Have you considered an electric flex shaft grinder?http://images2.mcmaster.com/Contents...g?ver=14734664 Attached ImagesIan TannerKawasaki KX450 and many other fine tools
Reply:Originally Posted by MonicaCan you guys quantify (if that's possible) the the "continuous use" phrase so I can have an idea for comparison.  Does "continuous use" mean essentially the tools will run for as long as I want to hold the trigger down?.
Reply:Air hose is really, really cheap.  $10 for 50 feet at Harbor Freight, or other favorite chinese import store.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:In my honest opinion stay away from any compressor Sears sells unless you special order an Ingersol Rand with big SCFM rating!  Been there done that and now I have a 33 gal oilless craftsman compressor I dont use!  I went to a compressor shop and bought a used Porter Cable compressor with belt driven pump and 60gal tank for like $250.  I think it delivers 12 CFM at 90psi and even that cant keep up with my demands.  I use it for die grinder, sandbasting, air drills, angle grinder, and let me tell you... you will have to sit and wait on it.  I read somewhere that the compressor should not run more than half the time you use your air tool. Heat is the number one cause of compressor issues.  The heat causes moisture to form in the tank and air line which cause short compressor and tool life. I understand when you have limited funds you buy what you can afford at the moment.  Trust me its well worth waiting till you can buy bigger.  Its like putting a bandaid on something that needs a turnicate.  You will be so disappointed in either of those compressors from Sears. Doesnt matter how big or small the tank is, its all about the SCFM, which is how fast the pump can deliver air to refill the tank.  Its inevetable that any airtool is going to deplete your storage air in the tank in a matter of seconds and the pump needs to replace it as fast as it can.  Craigslist and ebay are an ideal place to watch for used compressors.  If you were closer I'd make you a good deal on my 33gal craftsman compressor!  My ears thank me everyday for not using the cheap oilless compressor!  INSTEAD OF IT BEING OIL LESS THEY SHOULD CALL IT AIRLESS!  Thats what your essentially left with!Last edited by Nickoli; 09-21-2010 at 04:17 PM.NickoliIf I can't fix it, Its probably not broke.... Yeah Right!~ Damn I let out the factory installed smoke again ! ~
Reply:Originally Posted by fortyonethirtyI know this belongs on the other post, but.Have you considered an electric flex shaft grinder?http://images2.mcmaster.com/Contents...g?ver=14734664
Reply:Originally Posted by monica i keep thinking the angle die grinder will quickly do the work.  But i'm probably over estimating the available work time.
Reply:If the sticking point is lack of a 240V circuit, consider doing it yourself.  It's no different than a 120V circuit (2 current-carrying conductors and a ground), and even uses the same cable (12-2 copper for a 20A 240V circuit, 10-2 for a 30A).  2-pole breaker, appropriate receptacle, and you're there.  Hardest part is running the cable, or conduit if your area requires it (like Chicago).Or use heavier cable and put a subpanel in the garage, though that may be more than you're interested in doing - assuming you're interested in doing any of this.  Someone said air hose.  I agree.  You can move a lot of air a long distance with a cheap piece of hose if you run it at high pressure and regulate it down where you use it.  Or don't regulate it, if you're just filling tires in the driveway, or running air tools and you don't care what the pressure is.
Reply:can't search old posts-is your Dryer a 3-wire or 4-wire?Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Need air?  Don't have electrical power to run the compressor for whatever reason?Maybe an engine drive compressor.H-F unit, usually goes on sale pretty regularly for about $1k.  Pop the usual 20% discount coupon and you are at $800.  Usual drawbacks that you have to maintain a gasoline engine though, and running your own gas engine is almost never less expensive than using electrical power from the PoCo.  California excepted, where it may come closer to being a break-even on the energy cost.  http://www.harborfreight.com/air-too...sor-56064.html  The best laid schemes ... Gang oft agley ...
Reply:what about using an electric die grinder?  that way you could run the smaller wheels like you have been talking about. Those are made by many companies as for angle grinders this was the only one I found,an Ingersoll Rand GR25 cordless. but somebody has to make a corded  one. as for a entry level 120v compressors you will most likely be disappointed I have a dewalt of some sort and that hunk of junk will not even run a 1/2" impact wrench for more than 20 seconds. I now have a balder 5 horse 120 gallon that I picked up at an auction for 550.00 and it will run everything I got but the sandblaster with decent cycling time, in other words, by the time the compressor needs to recover my arms are ready for a break anyway. if your husband wont help you out with getting 220 out to the shop maybe its time to move the dryer out to the shop and put the compressor where the dryer is clothes will dry on furniture  good luck on what ever you decide.Do not argue with an idiot. He will drag you down to his level and beat you with experience.
Reply:My dryer is an old 3wire.  I've considered running from the 50a breaker that the hot tub use to be on.  tkanzler, you are correct, running the wire is the hardest part of the job.  The box is on the direct opposite corner of the house from the garages it has a way to go.  What I did consider is using the existing underground conduit from the hot tub, then connecting new conduit to the garage.  That would take care of the most difficult part of installing it.My next question would be if the new items I use for the box in the garage has to be up to be up to current code specs.  (It seems that it would be).  I've seen on CL a 220 box & receptacle setup that a guy has been trying to sell for a while, for only $35.  It was used on a kiln.  Any homeowner doing electrical work can do it themselves, they just need to grab a permit.  As for an electric die grinder - no thanks.  I don't want a straight shaft and I'm also concerned about the heat of the tool.  I'm down here in TX and things get hot fast.  I want to use 2" discs and I don't see that happening with a straight shaft.Lincoln AC225 and CartLincoln WeldPak HD and CartOne handI may catch the devil for this but I'll put in my $0.02. I bought a 60 gallon, 3hp A.O. Smith motor, single stage compressor from Harbor Freight many years ago for what you're talking about spending at Sears. I've run every air tool imaginable on that thing including a sand blaster. It just keeps on ticking. I think it's made by the same company, in South Carolina, that supplies Lowes compressors. The downside is that is seriously heavy and would require a good bit of help to get it moved. It's also 230v if that's a consideration.
Reply:Looks like my post won't show up, which is good because HF no longer sells the compressor I recommended. Oh, and it's 230v which you don't have. I will say, along with the others, that once you've heard an air compressor run, you'll wish you had spent a few more bucks and gotten one that requires oil.
Reply:Proxxon makes a very nice, small electric angle grinder with a long neck that uses small discs.  Cost about $150.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:I cant find the post I just made about the Proxxon grinder so I can add this link to it.  Post disappeared.  Oh well, here is the link.http://www.proxxontools.com/store/pc...2&idproduct=18MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Originally Posted by MonicaI've considered running from the 50a breaker that the hot tub use to be on. What I did consider is using the existing underground conduit from the hot tub, then connecting new conduit to the garage.  That would take care of the most difficult part of installing it.
Reply:was it just a 220v Box and receptacle?can you provide the link?35.00 is too much for just a box and receptacle.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:$30 now  lol  sent that ad to youLincoln AC225 and CartLincoln WeldPak HD and CartOne hand
Reply:Thanks Tkanzler.  The garage is attached.  Just that the builder and/or electrical guys were neanderthals in 1985   Lincoln AC225 and CartLincoln WeldPak HD and CartOne hand
Reply:I would go with the highest cfm first. The next in rank would be belt driven. Those direct drive units are NOISY!
Reply:Attached garage?  Piece of cake!I just saw a Home Depot flyer with three different 100A, 20 space, 20 circuit, main breaker load centers with five (5) 20A single-pole breakers included for less than $50.  Square D Homeline, GE, and Cutler-Hammer.  20 space/20 circuit means they won't take tandem or half-height breakers, but with 20 full-sized slots, it won't matter - you couldn't use them all up if you tried.  Since they have main breakers, the ground will be bonded to the neutral bus, but you can unbond it by removing a single screw (usually painted green) or a strap.  You may need to buy an equipment grounding buss, but they sell them (loose) for this purpose, and they're only a couple of bucks.  The panels will have tapped holes already (usually) for mounting it.  Some panels have two already (Siemens does this, if memory serves), but it's not big deal if you have to add one yourself.All you'd need is to run a feeder (4-wire), and add a 240V receptacle for a compressor, welder, 120V receptacles for general use, even lights.  You'd have an electrically self-sufficient shop, then.  I recently bought a 50A 240V flush receptacle at the BORG for $8.99, 4" surface box for $1.19, and raised cover for $2.04, to add a 50A welder circuit (still have the receipt).  $12.22 plus tax is a lot cheaper than whatever the CL stuff is, and it's new.  And it's 50A (NEMA 6-50, NOT a 120/240V range receptacle) - a 20A receptacle is about half that, though the box is the same, and the cover is similar (smaller hole).  The 100A main breaker in the subpanel can be left in place.  It's larger than the breaker for the feeder, so it's just a switch at that point.No grounding electrodes (rods) needed, as it's in the same building.With a subpanel in the garage, and a 50A welder circuit, you wouldn't need to tap your dryer circuit any more, and you can add some real 20A circuits for portable tools.  And lights, though even a lot of them are usually fine on a 15A circuit, which you probably already have.  You can leave everything plugged in, ready for use. Just so's you know.  Not trying to push you, or anything.
Reply:haha  Thanks for the heads up!  It's a rainy dreary weekend and we're probably going to go to random stores or the movies to entertain ourselves.  I'm sure we can have a look at the Depot.  I've been meaning to swing by the courthouse to check on a permit.Lincoln AC225 and CartLincoln WeldPak HD and CartOne hand
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